Sheriff says fire near Colorado Springs, which has killed two people and burned nearly 500 homes, was likely caused by humans.

Ray Miller hugged his wife, Cindy, before heading into the burn zone with a police escort Friday to try to retrieve medication from their home, which was burned to the ground in the Black Forest
Fire near Colorado Springs, Colo.(Photo: Michael Ciaglo, The Gazette)

El Paso County Sheriff Terry Maketa said he was "pretty confident" that lightning or other natural phenomena would be ruled out as the cause of the fire outside Colorado Springs. The blaze has killed two people, destroyed 473 homes and displaced tens of thousands of residents.

"We didn't have lightning in the area," he said, adding that investigators would try to determine whether the fire was arson or an accident.

The change in weather aided the effort against the blaze, which had been fueled by dry timber, record heat and stiff winds since it began Tuesday.

"We're turning a corner and, although we had just a terrible tragedy, the success of the firefighting efforts was much better" overnight, El Paso County Sheriff Terry Maketa said. "I'm not even sure we had any fire losses (of homes) Thursday night, if any, maybe one or two."

The blaze is now the most destructive in Colorado history, surpassing last year's Waldo Canyon Fire, which burned 347 homes and killed two people.

Maketa said the fire was 30% contained Friday evening, with full containment forecast for June 20. About 800 firefighters were on the scene.

The fire was burning about 25 square miles Friday within a few miles of Colorado Springs, the state's second largest city. More than 38,000 people across 70 square miles have been forced to evacuate, Maketa said.

Nancy Bradley, who lives in the fire zone, listens to the update on the Black Forest wildfire at Pike Peak Community College Rampart Range Campus in Colorado Springs, Colo., on June 14, 2013.(Photo: Christian Murdock, AP)

Just one day after clearing out the Flying Horse neighborhood in northern Colorado Springs, officials allowed people back into at least 1,000 houses. They also re-opened an eastern swath of the nearby Black Forest area in El Paso County.

Black Forest resident Randy Welsch, 57, said his house is in a voluntary evacuation zone, which is not patrolled by police and thus could be susceptible to theft.

"We're staying with our friends over night and during the day we go back to our house," said Welsch, who has lived in the area for 20 years. "It's a big hassle to be out of the house, but it's not the end of the world."

The Black Forest home that Deanna Ronco and her family lived in for 18 years was consumed by the flames. The odyssey began Tuesday afternoon, when Ronco got a call from emergency responders saying the family needed to leave right away.

Ronco started packing up for her five children but didn't bother packing anything sentimental -- she thought they would be back. She remembers the odd sight of smoke blowing in front of the sun and the sky turning a red hue.

Two days later, Ronco learned from a friend who is a volunteer firefighter that her home was gone.

"It's kind of been a roller coaster since then, trying to get my kids taken care of so we can take care of logistics," said Ronco, 40. "The sad part is it's not even over, and we're not even the only ones that have been affected."

That night, she and her husband left their children with friends and got a hotel room for the night so they could grieve for their home. "It's a very surreal feeling," she said.

Southwest of Colorado Springs, authorities opened a major highway and lifted evacuations at the Royal Gorge Fire, which had been 40% contained by early afternoon Friday.

The fire, which started Tuesday near Canon City, had burned more than 3,100 acres and damaged the historic steel-and-wooden-plank Royal Gorge Bridge and destroyed 48 of the park's 52 structures, which include rides, shows and other tourist attractions. The bridge is the highest in the United States.

The park operator and local officials plan to rebuild, the Canon City Daily Record reported.

The cause of the fire has not been determined.

In Rocky Mountain National Park, the lightning-sparked Big Meadow Fire had burned more than 350 acres of wilderness and was 30% contained Friday, four days after it started, officials said. The park remains open.

Other fires burned in Colorado, California and New Mexico. A southern New Mexico fire reached the historic mining town of Kingston, but an official said crews protected buildings there.

Ron Pedron, right, and his wife, Rita, talk to residents about a fire and evacuation map before a news conference June 16 at Pikes Peak Community College's Rampart Range campus near Colorado Springs. Nearly 500 homes have been burned by the Black Forest Fire. (Photo: Junfu Han, The (Colorado Springs) Gazette via AP)

Lara Stern, right, prays with her daughter, Alana, 8, and husband Samuel Stern during a community prayer and praise worship service June 16 at First Baptist Church on Black Forest Road northeast of Colorado Springs. The Stern family and at least ten other families at the church lost their homes to the Black Forest Fire. (Photo: Mark Reis, The (Colorado Springs) Gazette via AP)

James Folk, left, comforts his girlfriend, Jaycie Francis, as she remembers how she used to watch television at her aunt's burned home on June 13 in Black Forest, Colo. (Photo: Jerilee Bennett, The (Colorado Springs) Gazette, via AP)

A slurry bomber drops a line of fire retardant between a wildfire and homes in the Black Forest area northeast of Colorado Springs, Colo. More than 350 homes have been lost in the most destructive wildfire in Colorado history. (Photo: John Wark, AP)

Sean Collins moves a sprinkler to its new location on the roof of his parents' house before leaving the area after a mandatory evacuation was ordered for the communities east of Highway 83 near Colorado Springs.Jerilee Bennett, The (Colorado Springs) Gazette via AP (Photo: Michael Ciaglo, The Colorado Springs Gazette via AP)

Brothers Patrick, left, and Sean Collins pack up their cars with the final items from their parents' house after a mandatory evacuation was ordered for the communities east of Highway 83 near Colorado Springs, Colo. (Photo: Michael Ciaglo, The (Colorado Springs) Gazette via AP)

An AmeriCorps volunteer firefighter assigned to the El Paso County Sheriff's Office uses a chainsaw to break up and remove wood to help contain a spot fire in the Black Forest Fire area. (Photo: Brennan Linsley, AP)

Black Forest Fire Department personnel burn off brush as they create a firebreak to stop an approaching wildfire in an evacuated neighborhood on June 12 near Colorado Springs. (Photo: Brennan Linsley, AP)

The Black Forest Fire burns out of control for a second consecutive day near Colorado Springs. Three Colorado wildfires fueled by hot temperatures, gusty winds and thick, bone-dry forests have together burned dozens of homes and led to the evacuation of thousands of residents. (Photo: Bryan Oller, AP)

El Paso County Sheriff's Deputy Dan Cukowski helps Linda Davies evacuate her horses from an approaching wildfire on June 11 in Colorado. A wildfire near a residential area northeast of Colorado Springs forced people to evacuate their homes. (Photo: Jerilee Bennett, The (Colorado Springs) Gazette, via AP)